Which modem should I get?

Hi, My ISP's BSNL.. was using D-Link DSL 2750-U previously.
I connected net via DSL, connected to PC via Ethernet.
Is 2 Mega Bytes DL & 850 Kilo Bytes UL the maximum bandwidth I get of this router, regardless of the broadband plan?
Now I have a laptop that has wireless card, so I'm looking into a modem/router that gives possible both Ethernet/Wi-Fi speed over 2/3/4 MB DL+UL.
I might connect from both Ethernet for PC or wireless for Lap/ Smartphone
I like the DSL-2750U Version 2, design it's very sleek.
Amazon.in: Buy D-Link 2750U/IN/I Wireless N 300 ADSL2 Router (Black) with Modem (Compatible with MTNL, BSNL, Airtel, Reliance Communication and Tata Indicom) Online at Low Prices in India | D-Link Reviews & Ratings
I liked Mi Router 3C, but it seems it's a router only, so that's a no.
Mi Router 3C - 300Mbps with 802.11n - Mi India
Which modem should I buy?
Thanks!

2 Mega Bytes DL & 850 Kilo Bytes UL? You probably mean 2 Megabits DL & 850 Kilobits UL.
Your existing DSL-2750U easily supports those speeds.